World sea water temperatures

Water temperature in Mount Sinai in December

Is it warm enough to swim in Mount Sinai in December? Average water temperature in Mount Sinai in December is 46.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Mount Sinai in December is 53.4°F, and the coldest is 39.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Mount Sinai

Changes water temperature in Mount Sinai in December 2025, 2024

To get an accurate forecast for the water temperature in Mount Sinai for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Mount Sinai, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of December.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
December 150.2°F52°F48.4°F53.2°F
December 249.8°F50.9°F48.4°F53.4°F
December 349.8°F51.3°F48.2°F53.1°F
December 448.6°F50.7°F47.8°F52.3°F
December 548.2°F49.3°F47.3°F52°F
December 646.8°F49.5°F46.8°F51.8°F
December 747.3°F49.1°F46.8°F51.4°F
December 847.3°F48.6°F46.4°F51.1°F
December 947.3°F48.7°F46.2°F51.6°F
December 1046.9°F48.6°F45.9°F51.3°F
December 1146.2°F48.2°F45.3°F51.4°F
December 1245.5°F48.2°F45°F51.1°F
December 1345.1°F46.8°F44.6°F50.7°F
December 1443.3°F46.8°F43.3°F50.7°F
December 1542.8°F46.2°F42.8°F51.4°F
Day 2025 2024 Min Max
December 1643°F45.9°F42.6°F51.1°F
December 17 46.4°F42.6°F50.7°F
December 18 46.6°F42.3°F50.2°F
December 19 46.6°F42.1°F49.6°F
December 20 46.2°F42.3°F49.8°F
December 21 45.1°F42.3°F49.6°F
December 22 45.3°F41.7°F49.3°F
December 23 45.1°F41.9°F49.3°F
December 24 43.7°F40.5°F49.8°F
December 25 43.7°F40.8°F49.3°F
December 26 43.5°F41.4°F49.1°F
December 27 43.5°F41.4°F49.3°F
December 28 43.3°F40.1°F49.1°F
December 29 43.3°F40.3°F48.9°F
December 30 42.8°F40.5°F48.7°F
December 31 43.3°F39.9°F48.9°F
Mount Sinai water temp chart in December

Average water temperature in Mount Sinai in December over a decade

20152016201720182019
50.5°F46.8°F47.5°F45°F45.1°F
20202021202220232024
48.2°F48.4°F47.1°F47.7°F46.8°F

Mount Sinai sea state in December

Chart comparing the height of waves in Mount Sinai in December over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Mount Sinai in December

Mount Sinai water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in December?

Want to know where the water temperature in December is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in December. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
New York City46.8°F38.7°F54.3°F
Port Jefferson46.8°F39.9°F53.4°F
Flax Pond Beach46.8°F39.7°F53.8°F
Cedar Beach Mt Sinai46.8°F39.9°F53.6°F
Stony Brook46.6°F39.7°F54°F
Nissequogue46.4°F39.7°F52.5°F
Sunken Meadow46.4°F39.7°F52.5°F
Smithtown46.4°F39.7°F52.5°F
West Meadow Beach46.4°F39.7°F52.5°F
Short Beach46.4°F39.7°F52.5°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Mount Sinai is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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